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Old 03-03-2009, 03:27 PM   #1
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Default Going above 6psi - noob question.

I've searched but haven't found anything definitive but I just wanted to check with you guys.

If I want to go above 6psi on my Begi Series 1 I will need a new fuel pump, injectors, and something like MS (Currently using the rising rate fuel pressure regulator from Begi). That sound about right?
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Old 03-03-2009, 03:55 PM   #2
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I think just a megasquirt and injectors would take care of it. My stock fuel pump hasn't had any problems yet.
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Old 03-03-2009, 03:56 PM   #3
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My pump doesn't seem to have any trouble with 13psi and MS.
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Old 03-03-2009, 03:59 PM   #4
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MS and injectors, pump SHOULD be ok.
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Old 03-03-2009, 05:22 PM   #5
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I thought the stock pump couldn't go above 70-80psi and you would need 100psi or so at 7-8 psi of boost.

...or is that just dealt with by having a longer pulse?

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Old 03-03-2009, 06:05 PM   #6
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if you switch to a MS, you would eliminate that FPR and go back to the stock one. to hit 70psi of fuel pressure you'd need to be running almost 27psi of boost.
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Old 03-03-2009, 06:44 PM   #7
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Bigger injectors allow you to get more gas to the motor at the same fuel pressure.
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Old 03-03-2009, 06:48 PM   #8
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my fuel pump **** the bed at 197whp...actually a ways before that. I put in a walbro 255 and it will make it over 300whp on the stock ****.

I have a spare, new 190plh if you want to buy that ******.
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Old 03-04-2009, 02:39 PM   #9
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my fuel pump **** the bed at 197whp...actually a ways before that. I put in a walbro 255 and it will make it over 300whp on the stock ****.

I have a spare, new 190plh if you want to buy that ******.
How much?

pdexta: thanks that makes sense.

So the MSPNP seems like a massive amount of work and money that I can't commit right now do you guys think it would be reasonable to just do a piggy back like the voodoo box if I don't want to go above 180hp or so for now?
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Old 03-04-2009, 04:39 PM   #10
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no because that will mean using your fuel pressure regulator and do you really think you want to run 100+ psi in your fuel lines... your stock 100k or more miles fuel lines?

I mean ****, I ran my 12:1 FPR for 5 or so months with 6 psi and felt pretty uneasy about how much pressure the fuel was at... no worries about it now as I just put the 460's in and removed the FPR.
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Old 03-04-2009, 04:41 PM   #11
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I'd be much more concerned about what the stock ecu does with all that fuel once you hit open loop mode.
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Old 03-04-2009, 05:11 PM   #12
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Quote:
Originally Posted by Jeff25rs View Post
How much?

pdexta: thanks that makes sense.

So the MSPNP seems like a massive amount of work and money that I can't commit right now do you guys think it would be reasonable to just do a piggy back like the voodoo box if I don't want to go above 180hp or so for now?
Jeff; what would be the price of the Voodoo box? Be on the lookout for used MSs. It will be more than worth your effort.
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Old 03-04-2009, 05:15 PM   #13
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bandaids are the antithesis to someone trying to get a well running quick miata.
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Old 03-04-2009, 05:19 PM   #14
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mspnp is pretty ******* easy, especially with all the support here. If you can't figure it out, then you're a Down's baby and we don't need you here...thintheherd.txt
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Old 03-04-2009, 05:47 PM   #15
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Jeff; what would be the price of the Voodoo box? Be on the lookout for used MSs. It will be more than worth your effort.
voodoo is $400 or so
a MSPNP is $700. I know you can find the non-PNP MS for $400 but I'm not sure how much extra work those would be.

Also do you guys have any recommendations on injectors. I was looking at the 460cc rx-7 injectors. Also any recommendations on where to purchase said injectors from?
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Old 03-04-2009, 05:51 PM   #16
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Quote:
Originally Posted by Jeff25rs View Post
So the MSPNP seems like a massive amount of work and money that I can't commit right now
30 minutes of installation, 20 minutes of which is running a single vacuum line, and a couple hours on a dyno is 'a massive amount of work'?
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Old 03-04-2009, 06:16 PM   #17
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Originally Posted by Savington View Post
30 minutes of installation, 20 minutes of which is running a single vacuum line, and a couple hours on a dyno is 'a massive amount of work'?
That doesn't seem bad. I just glanced at this manual and it looked like a giant ******* wall of text:

MegaSquirtPNP by DIYAutoTune.com

Braineack how much would it cost me to get one of your MS setups? I'm not entirely sure what options I would need. (I think I would go with the stand alone with a/c?)
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Old 03-04-2009, 06:16 PM   #18
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Quote:
Originally Posted by Jeff25rs View Post
voodoo is $400 or so
a MSPNP is $700. I know you can find the non-PNP MS for $400 but I'm not sure how much extra work those would be.

Also do you guys have any recommendations on injectors. I was looking at the 460cc rx-7 injectors. Also any recommendations on where to purchase said injectors from?
Yes but, that's a new MS. I sold my MS for 96/97 for something like $550 if I remember well. I mentioned a used MS because I see some forum members buying the new Adaptronic ECUs so I figure, maybe some deal will come up.
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Old 03-17-2009, 12:50 PM   #19
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Hmm. subscribed for future reference
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Old 03-17-2009, 01:47 PM   #20
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Quote:
Originally Posted by Jeff25rs View Post
I've searched but haven't found anything definitive but I just wanted to check with you guys.

If I want to go above 6psi on my Begi Series 1 I will need a new fuel pump, injectors, and something like MS (Currently using the rising rate fuel pressure regulator from Begi). That sound about right?
In all of the posts I see no mention of an intercooler. It is needed above 6 psi. Oh, and a clutch.
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